Benzene is not an ingredient intentionally used in sunscreens, but the products on Valisure's list were found to be contaminated with benzene.

"Benzene is a chemical that, when activated with exposure to the skin, blood, or organs, can affect changes in your DNA that cause mutations for cancers," says Madhuri Chadha, M.D., founder of Dr. Madh Skin Solutions and radiologist currently working in aesthetic dermatology. "Benzene is linked to blood cancers such as leukemia and other cancers and conditions like [acute lymphoblastic leukemia], [chronic myelogenous leukemia], Non Hodgkins lymphoma, and aplastic anemia," adds Dr. Chadha